003 File Manager
Current Path:
/usr/src/lib/libc/stdlib
usr
/
src
/
lib
/
libc
/
stdlib
/
📁
..
📄
Makefile.inc
(2.73 KB)
📄
Symbol.map
(1.38 KB)
📄
_Exit.c
(529 B)
📄
a64l.3
(4.79 KB)
📄
a64l.c
(846 B)
📄
abort.3
(2.55 KB)
📄
abort.c
(2.76 KB)
📄
abs.3
(2.36 KB)
📄
abs.c
(1.84 KB)
📄
alloca.3
(2.8 KB)
📄
at_quick_exit.3
(2.12 KB)
📄
atexit.3
(3.25 KB)
📄
atexit.c
(6.73 KB)
📄
atexit.h
(1.76 KB)
📄
atof.3
(2.77 KB)
📄
atof.c
(2.17 KB)
📄
atoi.3
(2.59 KB)
📄
atoi.c
(2.16 KB)
📄
atol.3
(3.16 KB)
📄
atol.c
(2.17 KB)
📄
atoll.c
(2.05 KB)
📄
bsearch.3
(4.53 KB)
📄
bsearch.c
(3.35 KB)
📄
bsearch_b.c
(1.38 KB)
📄
cxa_thread_atexit.c
(1.67 KB)
📄
cxa_thread_atexit_impl.c
(4.63 KB)
📄
div.3
(2.22 KB)
📄
div.c
(3 KB)
📄
exit.3
(3.66 KB)
📄
exit.c
(2.72 KB)
📄
getenv.3
(5.32 KB)
📄
getenv.c
(17.03 KB)
📄
getopt.3
(7.57 KB)
📄
getopt.c
(4.22 KB)
📄
getopt_long.3
(11.45 KB)
📄
getopt_long.c
(16.41 KB)
📄
getsubopt.3
(3.98 KB)
📄
getsubopt.c
(3.13 KB)
📄
hcreate.3
(7.04 KB)
📄
hcreate.c
(2.23 KB)
📄
hcreate_r.c
(2.27 KB)
📄
hdestroy_r.c
(1.6 KB)
📄
heapsort.c
(6.63 KB)
📄
heapsort_b.c
(1.38 KB)
📄
hsearch.h
(1.63 KB)
📄
hsearch_r.c
(4.36 KB)
📄
imaxabs.3
(1.92 KB)
📄
imaxabs.c
(1.52 KB)
📄
imaxdiv.3
(2.09 KB)
📄
imaxdiv.c
(1.81 KB)
📄
insque.3
(1.13 KB)
📄
insque.c
(925 B)
📁
jemalloc
📄
l64a.c
(726 B)
📄
labs.3
(2.28 KB)
📄
labs.c
(1.85 KB)
📄
ldiv.3
(2.34 KB)
📄
ldiv.c
(2.17 KB)
📄
llabs.3
(1.91 KB)
📄
llabs.c
(1.52 KB)
📄
lldiv.3
(2.08 KB)
📄
lldiv.c
(1.8 KB)
📄
lsearch.3
(2.9 KB)
📄
lsearch.c
(1.47 KB)
📄
memory.3
(2.48 KB)
📄
merge.c
(9.27 KB)
📄
mergesort_b.c
(1.38 KB)
📄
ptsname.3
(4.64 KB)
📄
ptsname.c
(3.29 KB)
📄
qsort.3
(9.67 KB)
📄
qsort.c
(6.32 KB)
📄
qsort_r.c
(430 B)
📄
qsort_s.c
(147 B)
📄
quick_exit.3
(2.13 KB)
📄
quick_exit.c
(2.53 KB)
📄
radixsort.3
(4.35 KB)
📄
radixsort.c
(7.89 KB)
📄
rand.3
(4.31 KB)
📄
rand.c
(4.58 KB)
📄
random.3
(5.11 KB)
📄
random.c
(17.58 KB)
📄
random.h
(2.91 KB)
📄
reallocarray.3
(3.75 KB)
📄
reallocarray.c
(1.38 KB)
📄
reallocf.3
(2.72 KB)
📄
reallocf.c
(1.83 KB)
📄
realpath.3
(3.73 KB)
📄
realpath.c
(6.32 KB)
📄
remque.c
(581 B)
📄
set_constraint_handler_s.3
(3.96 KB)
📄
set_constraint_handler_s.c
(2.91 KB)
📄
strfmon.3
(4.83 KB)
📄
strfmon.c
(16.2 KB)
📄
strtod.3
(5.87 KB)
📄
strtoimax.c
(4.77 KB)
📄
strtol.3
(5.26 KB)
📄
strtol.c
(4.7 KB)
📄
strtold.c
(1.71 KB)
📄
strtoll.c
(4.77 KB)
📄
strtonum.3
(3.45 KB)
📄
strtonum.c
(1.79 KB)
📄
strtoq.c
(1.97 KB)
📄
strtoul.3
(5.17 KB)
📄
strtoul.c
(3.72 KB)
📄
strtoull.c
(3.75 KB)
📄
strtoumax.c
(3.72 KB)
📄
strtouq.c
(1.98 KB)
📄
system.3
(3.09 KB)
📄
system.c
(3.8 KB)
📄
tdelete.c
(5.53 KB)
📄
tfind.c
(1.06 KB)
📄
tsearch.3
(5.43 KB)
📄
tsearch.c
(5.01 KB)
📄
tsearch_path.h
(2.8 KB)
📄
twalk.c
(1.18 KB)
Editing: cxa_thread_atexit_impl.c
/*- * Copyright (c) 2016 Mahdi Mokhtari <mokhi64@gmail.com> * Copyright (c) 2016, 2017 The FreeBSD Foundation * All rights reserved. * * Portions of this software were developed by Konstantin Belousov * under sponsorship from the FreeBSD Foundation. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include <sys/cdefs.h> __FBSDID("$FreeBSD$"); #include <sys/queue.h> #include "namespace.h" #include <errno.h> #include <link.h> #include <pthread.h> #include <stddef.h> #include <stdlib.h> #include <stdio.h> #include "un-namespace.h" #include "libc_private.h" /* * C++11 introduces the thread_local scope (like __thread with some * additions). As a key-feature it should support non-trivial * destructors, registered with __cxa_thread_atexit() to be executed * at the thread termination. * * The implemention keeps a _Thread_local list of destructors per each * thread, and calls __cxa_thread_call_dtors() on each thread's exit * to do cleanup. For a thread calling exit(3), in particular, for * the initial thread returning from main(), we call * __cxa_thread_call_dtors() inside exit(). * * It could be possible that a dynamically loaded library, use * thread_local variable but is dlclose()'d before thread exit. The * destructor of this variable will then try to access the address, * for calling it but it's unloaded, so it'll crash. We're using * __elf_phdr_match_addr() to detect and prevent such cases and so * prevent the crash. */ #define CXA_DTORS_ITERATIONS 4 struct cxa_thread_dtor { void *obj; void (*func)(void *); void *dso; LIST_ENTRY(cxa_thread_dtor) entry; }; static _Thread_local LIST_HEAD(dtor_list, cxa_thread_dtor) dtors = LIST_HEAD_INITIALIZER(dtors); int __cxa_thread_atexit_impl(void (*dtor_func)(void *), void *obj, void *dso_symbol) { return (__cxa_thread_atexit_hidden(dtor_func, obj, dso_symbol)); } int __cxa_thread_atexit_hidden(void (*dtor_func)(void *), void *obj, void *dso_symbol) { struct cxa_thread_dtor *new_dtor; new_dtor = malloc(sizeof(*new_dtor)); if (new_dtor == NULL) { errno = ENOMEM; /* forcibly override malloc(3) error */ return (-1); } new_dtor->obj = obj; new_dtor->func = dtor_func; new_dtor->dso = dso_symbol; LIST_INSERT_HEAD(&dtors, new_dtor, entry); return (0); } static void walk_cb_call(struct cxa_thread_dtor *dtor) { struct dl_phdr_info phdr_info; if (_rtld_addr_phdr(dtor->dso, &phdr_info) && __elf_phdr_match_addr(&phdr_info, dtor->func)) dtor->func(dtor->obj); else fprintf(stderr, "__cxa_thread_call_dtors: dtr %p from " "unloaded dso, skipping\n", (void *)(dtor->func)); } static void walk_cb_nocall(struct cxa_thread_dtor *dtor __unused) { } static void cxa_thread_walk(void (*cb)(struct cxa_thread_dtor *)) { struct cxa_thread_dtor *dtor, *tdtor; LIST_FOREACH_SAFE(dtor, &dtors, entry, tdtor) { LIST_REMOVE(dtor, entry); cb(dtor); free(dtor); } } /* * This is the callback function we use to call destructors, once for * each thread. It is called in exit(3) in libc/stdlib/exit.c and * before exit_thread() in libthr/thread/thr_exit.c. */ void __cxa_thread_call_dtors(void) { int i; for (i = 0; i < CXA_DTORS_ITERATIONS && !LIST_EMPTY(&dtors); i++) cxa_thread_walk(walk_cb_call); if (!LIST_EMPTY(&dtors)) { fprintf(stderr, "Thread %p is exiting with more " "thread-specific dtors created after %d iterations " "of destructor calls\n", _pthread_self(), i); cxa_thread_walk(walk_cb_nocall); } }
Upload File
Create Folder